Earlier quoted context omitted.
As a spanish I could say the most challenging part of english is the lack of consistency between how you write something and how you pronounce it. Spanish is totally systematic in this sense and once you can read it, you can pronounce it. English is a bit messy regarding to this, for whatever reasons.
as i understand it, english is actually 3-5 other languages in a trench coat.
~26% Germanic
~29% Latin
~29% French
~16% Other
RobWords covers this really well: https://youtu.be/PCE4C9GvqI0?si=4Wd6NFus4v1YqmC3